Question

What is the mass of an electron?

Answer 1

The invariant mass of an electron is approximately9.109×10−31 kilograms, or5.489×10−4atomic mass units.

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Answer 2

mass of an electron --

9.109 × 10 - 31 kilograms.

OR

5.489 × 10 - 4 kilograms. atomic mass unit.

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